1011 research outputs found
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Practice of handicraft and experimental classes for schoolchildren
Get PDFpublisherTsuyama National College of Technology has continued every effort to increase the number of applicants for admission.
Despite holding the open campus event and the extension lectures, we have still struggled to find out the effective way to achieve this objective. We participated in the JFE festival as a publicity activity in the southern area of Okayama prefecture on November 3, 2006. We conducted three handicraft classes and one experimental class, aiming at schoolchildren to have interest in science and technologies. In this report, we described how to conduct and carry out them. With the results of this event, we conclude that the classes successfully gave many schoolchildren fun of technologies and provoked them to learn science.departmental bulletin pape
Simple wind speed prediction method after a short time using hierarchical neural network
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A study on performance improvement of Active Net model
Get PDFpublisherWe have studied about the structure and the performance about Active Net model. Active Net is a two dimensional network model which is a expanded version of the snakes model. In Active Net, when the extraction target object and the other small region, is called noise in this paper, exist in an input image, there is a problem such as a target can't be captured or iterative operation's not ending because the energy of Active Net isn't minimized right. We propose the method, the lattice points of the
net model are moved by compulsorily changing energy of the net model at random. As a result, reducing the influence of the noise becomes possible. Some experimental results are also described.departmental bulletin pape
Die Möglichkeit der Technikphilosophie
Get PDFpublisherDa die Technik ein sowohl zentrales wie bedrängendes Problem unseres gesamten Lebens geworden ist, so ist sie damit
auch Sache der Philosophie geworden, und in Wahrheit ist so etwas wie eine ‚Philosophie der Technik‘ konzipiert worden.
In dieser Abhandlung geht es darum, die Möglichkeit der Technikphilosophie zu erörtern, die den Herausforderungen der
modernen Technologien gerecht wird. Dazu wird geschichtlich auf die schon in den 30er Jahren behandelten
technikphilosophischen Überlegungen von E. Cassirer, K. Miki, und M. Heidegger zurückgegangendepartmental bulletin pape
How many days does it take if the moon falls to the Earth?
Get PDFpublisherThe moon goes around the Earth with a period of about 4 weeks. If the relative velocity of the moon to the Earth suddenly became zero, how many days would it take the moon falls and collides with the Earth? This simple question is
unexpectedly beyond the high-school level physics. In this report, a numerical computation and an analytical solution are
presented which 4th grade students performed in the Mathematical Science I class as free theme studies.departmental bulletin pape
Influence of repetition of high-temperature treatment of H(2)O(2)-treated graphite on adsorption of Ar
Get PDFpublisherA natural–graphite powder previously oxidized in H2O2 aq.soln. was heated under flow of 1 atm Ar at 1000℃
repeatedly, and measured volumetrically for its adsorption–desorption isotherms of Ar at –196℃ after each heat
treatment. It was found that the more often the graphite was heated, the less the amount of Ar adsorbed became.
Every sample gave the adsorption isotherm with a remarkable step over the relative pressures from 0.3
to 0.4. And besides, the hysteresis between the adsorption branch and the desorption one did not change in
shape through repetition of the heat treatment at 1000℃. These facts are briefly discussed in terms of porosity
for the graphite samples.departmental bulletin pape
TNCT independently blocking of spam e-mail and its effects
Get PDFpublisherE-mail has become a necessary means of communication for various businesses and daily lives. In recent years, spam
e-mail has increased as e-mail has become more popular, and now, the spam is an object of public concern. Like a letter
or a card, an e-mail should not be censored and restricted. Without blocking the spam, however, unmanageable spam or
computer virus attached the spam may damage computers and their networks. In our college, blocking of the spam has
been implemented on our mail servers since 2004. We adopted not content-based but IP-based filtering to respect the
privacy of users. The blocking only needs functions of Postfix mail server program without optional software and/or
hardware. And it can be configured, maintained, and monitored by our own hands. In this paper, after basic policies of the blocking and actual configurations of Postfix are explained, effects and problems are discussed.departmental bulletin pape
Study of Amorphous Carbon Nitride Films Aiming at White Light\nEmitting Devices
Get PDFpublisherThe possibility for white light emitting devices using carbon nitride (CNx) thin films has been studied.
Microwave ECR-plasma CVD and RF-sputtering apparatuses have been used for the formation of CNx thin
films. In both cases, CH4 was used as the source or sub-source of carbon in order to investigate the effect of
hydrogenated carbon nitride for luminescence. The cathodeluminescence (CL) measurement of the film grown
by ECR-plasma CVD method showed three peaks of R/G/B. The photoluminescence (PL) measurement of the
film grown by RF-sputtering also showed the red peak, which could not be observed in the film without
hydrogen. Together with the X-ray Photoelectron Spectroscopy (XPS) analysis data, we concluded that the red
peak originates from C-H bonds and blue peak from C-N bonds.departmental bulletin pape
Simulation as for Position of Electrode spot of Fluorescent Lamp for High Frequency Operation
Get PDFpublisherIt is very useful for thinking the lamp life to grasp the spot position of the electrode filament of the fluorescent
lamp. In this research, the spot position on the electrode of the fluorescent lamp was grasped by regarding the
electrode as the electric circuit, which consisted of the resistance and inductance. The calculated result showed
the following two things. Firstly, the spot position at cathode cycle moves as the lighting time increases.
Secondly the spot position at the anode cycle does not move as much as at the cathode cycle.departmental bulletin pape